Differentiated optical services: a quality of optical service model for WDM networks

Thomas D. Ndousse; Nada Golmie

doi:10.1117/12.360411

25 August 1999 Differentiated optical services: a quality of optical service model for WDM networks

Thomas D. Ndousse, Nada Golmie

Proceedings Volume 3843, All-Optical Networking 1999: Architecture, Control, and Management Issues; (1999) https://doi.org/10.1117/12.360411
Event: Photonics East '99, 1999, Boston, MA, United States

Abstract

This paper addresses the issues of guaranteed and scalable end-to-end QoS in Metropolitan DWDM networks serving as transit networks for IP access networks. DWDM offering few wavelengths have in the past been deployed in backbone networks to upgrade point-to-point transmission where sharing is based on coarse granularity. This type of DWDM backbone networks, offering few lightpaths, provides no support for QoS services traversing the network. As DWDM networks with larger numbers of wavelengths penetrate the data-centric Metro environment, specific IP service requirements such as priority restoration, scalability, dynamic provisioning of capacity and routes, and support for coarse-grain QoS capabilities will have to be addressed in the optical domain in order to support end-to-end Service- Level Agreements. In this paper, we focus on the support of QoS in the optical domain in order to achieve end-to-end QoS over a DWDM network. We propose a QoS service model in the optical domain called Differentiated Optical Services (DOS). Service classification in DOS is based on a set of optical parameters that captures the quality and reliability of the optical lightpath.

Citation Download Citation

Thomas D. Ndousse and Nada Golmie "Differentiated optical services: a quality of optical service model for WDM networks", Proc. SPIE 3843, All-Optical Networking 1999: Architecture, Control, and Management Issues, (25 August 1999); https://doi.org/10.1117/12.360411

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